Discussion on Setting of Residual Current Operated Protection

Shan Guangzhi Ma Yunfeng （The Architectural Design and Research Institute of HIT，Harbin 150090，China）

Abstract For those electric equipments with much leakage current such precautions can be used against electric shock as enhanced guarding, reasonable grounding, reliable local equipotential connection and isolation transformer installed in case of installation of residual current operated protection thus making equipment inoperative.

Key words　Leakage current from distribution loop of frequency convertor 　Residual current operated protection 　Other protection measures

摘　要　对于泄漏电流较大的电气设备，在采用剩余电流动作保护装置致使设备无法正常运行时，可采用加强遮拦、合理接地、可靠的局部等电位联结、设置隔离变压器等措施来防范电击危害

关键词 变频器配电回路的泄漏电流　剩余电流动作保护　其他防范措施